How to build Prisma Windows electron app on Linux?

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What we want to achieve is to build linux and windows installers for our Electron app on our (Linux) build server.

After installing Wine, this basically works, except for Prisma:

i.e. Prisma relies on OS-specific binaries - thus, we must have the correct binaries available for each platform.

Prisma Query engine / Prisma Client

This part works: we set the binaryTarget to our target platforms: binaryTargets = ["windows", "debian-openssl-1.1.x"].
When we now generate the client (prisma generate), the target dir (node_modules/.prisma/client/) contains the query-engines for linux and windows: libquery_engine-debian-openssl-1.1.x.so.node, query_engine-windows.dll.node

Prisma Migration Engine

i.e. in package.json we only specify the prisma dependency and npm will only install the binaries for the current OS in node_modules/@prisma/engines/, i.e.: libquery_engine-debian-openssl-1.1.x.so.node, migration-engine-debian-openssl-1.1.x

How can we get npm to install both migration Engines (i.e. for Windows and Linux)?

electron-builder prisma npm
1 Answers
  • set the PRISMA_CLI_BINARY_TARGETS accordingly: e.g. PRISMA_CLI_BINARY_TARGETS=darwin,rhel-openssl-1.0.x npm install
  • then start npm install
  • and now the binaries for all specified operating systems should exist in node_modules/@prisma/engines
    • in my case, this did not work initially
    • after deleting node_modules/@prisma/engines and starting npm install again, it worked
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